2009-2011 Mercedes-Benz E-class (W212) E 220 CDI BlueEFFICIENCY (170 Hp)

The Mercedes-Benz E 220 CDI BlueEFFICIENCY, produced between March 2009 and February 2011, was a key variant within the W212 E-Class range. Positioned as a fuel-efficient and refined option, it catered to buyers seeking a balance between performance and economy in the mid-size executive car segment. This model represented Mercedes-Benz’s commitment to diesel technology, offering a compelling alternative to petrol-powered E-Class models. It was primarily marketed in Europe, where diesel engines held a significant market share, but was also available in other regions. The E 220 CDI BlueEFFICIENCY aimed to deliver the comfort and prestige expected of the E-Class, while minimizing running costs.

Technical Specifications

Powertrain & Engine Architecture

The E 220 CDI BlueEFFICIENCY was powered by the OM651.924 2.1-liter inline-four diesel engine. This engine was a cornerstone of Mercedes-Benz’s diesel offerings, known for its robust construction and efficiency. The ‘BlueEFFICIENCY’ designation indicated the inclusion of various fuel-saving technologies, including optimized combustion, reduced friction, and an enhanced exhaust gas recirculation system. The engine utilized a common rail direct injection system, delivering fuel at extremely high pressures for improved atomization and combustion. A bi-turbocharger setup, featuring a small turbo for quick response and a larger turbo for high-end power, contributed to the engine’s 400 Nm (295 lb-ft) of torque available from 1400 to 2800 rpm. The engine featured a double overhead camshaft (DOHC) valvetrain with four valves per cylinder, optimizing gas flow. The standard transmission was a 6-speed manual, although a 5-speed automatic transmission (7G-TRONIC was available as an option). The automatic transmission was known for its smooth shifts and adaptive learning capabilities, adjusting shift points based on driving style.

Driving Characteristics

The E 220 CDI with the manual transmission offered a respectable, if not exhilarating, driving experience. Acceleration from 0 to 100 km/h (0-62 mph) took approximately 8.7 seconds. The engine’s strong low-end torque made it well-suited for everyday driving and overtaking maneuvers. The automatic transmission, while providing convenience, slightly dulled the responsiveness compared to the manual. Gear ratios were optimized for fuel efficiency, meaning the engine didn’t rev as freely as some competitors. The focus was on providing a comfortable and refined ride, rather than sporty handling. The E 220 CDI felt composed on the highway, with good stability and sound insulation. Compared to the more powerful E 250 CDI or E 350 models, the E 220 CDI prioritized fuel economy and lower running costs over outright performance.

Equipment & Trim Levels

The E 220 CDI BlueEFFICIENCY typically came equipped with a generous array of standard features. These included automatic climate control, a multi-function steering wheel, power windows and mirrors, and a basic audio system. Upholstery was typically cloth, with leather options available as an upgrade. Optional extras included a premium sound system, navigation system, sunroof, and various driver assistance systems such as parking sensors and adaptive cruise control. Trim levels varied depending on the market, but generally offered packages that bundled together popular options. The interior design was typical of the W212 E-Class, emphasizing a luxurious and understated aesthetic.

Chassis & Braking

The W212 E-Class featured a sophisticated chassis design. The front suspension utilized a multi-link setup with coil springs and a transverse stabilizer bar, providing a comfortable ride and good handling. The rear suspension also employed a multi-link design, contributing to stability and ride quality. Air suspension was available as an option, further enhancing ride comfort. Braking duties were handled by ventilated discs at the front and solid discs at the rear. Anti-lock braking system (ABS) was standard, ensuring safe and controlled stopping power. The E 220 CDI’s weight, around 1660 kg (3659.67 lbs), was relatively moderate for its class, contributing to balanced handling.

Market Reception & Comparison

The E 220 CDI BlueEFFICIENCY was generally well-received by automotive critics. It was praised for its fuel efficiency, comfortable ride, and refined interior. However, some reviewers noted that the engine lacked the punch of more powerful alternatives. Compared to the E 250 CDI, the E 220 CDI offered lower running costs but sacrificed some performance. Against competitors like the BMW 520d and Audi A6 2.0 TDI, the E 220 CDI held its own in terms of fuel economy and refinement, but often lagged slightly in terms of driving dynamics. Its fuel economy figures of 5.3-5.5 l/100 km (44.4-42.8 US mpg) were competitive for its class.

Legacy

The OM651 engine family, including the 2.1-liter variant found in the E 220 CDI, has proven to be remarkably durable and reliable. These engines are known for their longevity and relatively low maintenance costs. In the used car market, the E 220 CDI BlueEFFICIENCY remains a popular choice for buyers seeking a comfortable, fuel-efficient, and well-built executive car. While older examples may require routine maintenance, the engine itself is generally considered robust. The W212 E-Class, as a whole, has established a reputation for quality and reliability, contributing to the continued desirability of the E 220 CDI BlueEFFICIENCY.